“Without the organs, Jay would not have survived. Saying thank you really doesn’t cover it. We don’t know much about the donor at all. All we know is it was a child smaller than Jay.

“If the parents wanted to meet I would love to meet them. But right now I want to leave them to grieve because they have just lost a child.”

He will spend the next six months at home to minimise the risk of infection as his recovery continues

Katie suspected there was something badly wrong with baby Jay when he struggled to feed and go to the toilet days after being born.

Her “world fell apart” when he fell seriously ill aged just six weeks – leaving doctors at Kettering General Hospital baffled at first.

“He suddenly went floppy and lifeless and was vomiting bile,” said Katie, who is separated from Jay’s dad.

“We called the ambulance and got him to hospital. It was terrifying as he was such a tiny baby.

“Jay at that time was dying. They did all the tests for meningitis , but didn’t check for a bowel problem.

“After quite a few hours he ended up having a cardiac arrest and was fighting for his life. It took four hours for him to be stabilised enough to be transferred to the Leicester Royal Infirmary.

“They still didn’t know what was wrong with him so they did some exploratory surgery and discovered the small intestine had died.

“He was then placed on parenteral nutrition feeding into his veins, unable to eat or drink. As a complication, he got kidney failure, which has progressed.

“The PN feeding also destroyed the liver, so in the summer of 2016 they deemed him poorly enough to go on to the transplant list. We had a wait of 15 months before we got the call.

“For the bowel, it needed to be a small donor, smaller than Jay, because you have to fit the whole small intestine inside. In the last few months his kidneys were really struggling, so if he didn’t have the transplant when he did we probably would have lost him.”

(Image: Daily Mirror)

The way the op was carried out means Jay now has four kidneys and two pancreases in his body.

He will spend the next six months at home to minimise the risk of infection as his recovery continues.

“He’s off [school] for six months because he’s immunosuppressed,” said Katie. “We are in isolation to make sure he doesn’t pick up anything.”

Speaking about the Mirror’s Change The Law For Life campaign, Katie said: “I really support what the Mirror is doing. Hopefully the law will finally be changed. It makes sense for it to be an opt-out system.”